Improvement in saw-gins for ginning cotton



Y little below the periphery of! the saws. roller c is formed of aseries of sections that 'wide enough to receive the saws.

UNITED STATES PATENT (NEIGE.

JNO. n. sHEnAnD, on LIVINGSTON, ALABAMA.

IMPROVEMENT `IN SAWfGlNS FOR GINNING QQITTON.'`

' Specification forming part of Letters Patent No. 3.568 dated April 3Q,1844.y I

segment of the. revolving grate o1" roller against" which the saws act.The lettersof reference designate similar parts in each of the figures.

The following is a description of the construction and operation of lnymachine.

A suitable frame, a a, is. made similar to any convenient constructionin which the sawshaft b 1s placed. The saws are such as are in ordinaryuse, and are made to project into the hopper c through a series of shortribs, d, that Vdo not 'extend up' to the topframe, but4 have their upperends rest against a roller, e, or`

nearly so,approching it very closely, and a The do not quite touch eachother, leavinga space Just inside of the periphery they are grooved outon each. face, as shown in Fig. 3. f The surface of the roller issmooth, excepting the spaces lbetween the sections above named, saidsections being about the same widthasl the ribs which are brought uptomeet them. `This roller or revolving grate is connected to the sawshaftoutside the frame yby bands or gearing, so as to revolve in the samedirection as the saws, the

periphery running` against the direction ofv said saws, beintherebyprevented from being wedged or cho ed by the cotton, and by revolvingagainstthe saws loosens the dirt and.A motes, and thereby render themeasier separated from the cotton by the trash-brush,

while by being grooved out'on'the inside, as

before described, they; present the least pos.

, sible surface to friction, and the grates are made to wear longer bypresenting achanging -surfactant thy. point of friction.

Just behind the revolving grate'e isplaced a cylindrical brush, f, whichis made to turn' in the same direction as said grate, and against theteeth of the saws, while the cotton is upon them, thereby removing themetes, trash, &e.,' before the cotton is taken from the saws, and

throws it over into a box, g. This. brush I ing everything heavier thanthe cotton to fall throughgrates i, pla-ced below said brush. lThe object of making the above-named brushes cylindrical is that no wind lmaybe created by their revolutions. Behind .the brush h is a winged brush,k, which throws the cotton out of the machine.4

The fines of my machine I cover on the bot tom with metal, through whichoblongor other shaped holes are punched from the upper side, so as toleave projections below, that any remaining nlot'es, trash, and dirt,can drop through without4 choking o r admitting the air from below.

Thewhole machine maybe driven by'means' of'bands and pulleys orcog-wheels. "lhatrepresented is banded, the bands beingtightened bytwoidler-pulleys, l, on each side, oli common construction. ,y

What I claim as my inventiox i,'and` desire to secure by Letters Patent,is- Y Connectingtherevolving partofthegrate with the other ruiming'parts of the machine,

-so'as to cause its periphery .to move ina contrary direction tothesa'ws, and the addition of the cylindrical slow-brush placed between,and in combinationwith the winged brush'aiid the saws, as described. l.

42. The grates placed abate the bottom of the fines, in combination withthe cotton-gine, for the purposes hereinbefore specified.

' "JOHN H. sHEnAED.

f Witnesses:

J. J. Guns-iNOUcn,Y L. CALDWELL;

